Congratulations for this initiative.
I have no need for this personally but I know how expensive it is to go
from a specific module to an OCA grade one.
It'll be interesting if this kind of fundraising works.
Even if the money collected was used to complete what OdooMRP already
proposed it'd be well used.
If not, maybe a bigger and more generic fundraising can be organised by
OCA, which would then purchase the work from those like you who need
help maturing good modules.